Goldenrod Gall - Eurosta solidaginis
These galls are pretty common on goldenrod. They are caused by the fruit fly, Eurosta solidaginis, the larvae of which form round galls on the stem of Solidago sp.
This gall had a big hole - either from a parasitoid or from the fruit fly leaving the gall? I cut the gall open and it was emptied out.
Habitat: Meadow
The goldenrod gall fly, also known as the goldenrod ball gallmaker, is a species of fly native to North America. The species is best known for the characteristic galls it forms on several species in the ''Solidago'', or goldenrod, genus.
Similar species: True Flies
By Christine Young
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Uploaded May 1, 2020. Captured Oct 11, 2019 10:32 in 5 East St, New Milford, CT 06776, USA.
